EP3498078B1 - Harvester separation frame orientation adjustment - Google Patents
Harvester separation frame orientation adjustment Download PDFInfo
- Publication number
- EP3498078B1 EP3498078B1 EP18211634.3A EP18211634A EP3498078B1 EP 3498078 B1 EP3498078 B1 EP 3498078B1 EP 18211634 A EP18211634 A EP 18211634A EP 3498078 B1 EP3498078 B1 EP 3498078B1
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- EP
- European Patent Office
- Prior art keywords
- separation frame
- harvester
- swinger
- drive
- chassis
- Prior art date
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- 238000000926 separation method Methods 0.000 title claims description 149
- 238000004140 cleaning Methods 0.000 claims description 53
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- 238000001914 filtration Methods 0.000 description 6
- 238000003306 harvesting Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
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- 238000000429 assembly Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010902 straw Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
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Images
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D75/00—Accessories for harvesters or mowers
- A01D75/28—Control mechanisms for harvesters or mowers when moving on slopes; Devices preventing lateral pull
- A01D75/282—Control mechanisms for harvesters or mowers when moving on slopes; Devices preventing lateral pull acting on the grain cleaning and separating device
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/30—Straw separators, i.e. straw walkers, for separating residual grain from the straw
- A01F12/305—Straw separators, i.e. straw walkers, for separating residual grain from the straw combined with additional grain extracting means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/30—Straw separators, i.e. straw walkers, for separating residual grain from the straw
- A01F12/32—Straw separators, i.e. straw walkers, for separating residual grain from the straw with shaker screens or sieves
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/44—Grain cleaners; Grain separators
- A01F12/446—Sieving means
- A01F12/448—Sieve adjusting means
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
- A01D41/127—Control or measuring arrangements specially adapted for combines
- A01D41/1276—Control or measuring arrangements specially adapted for combines for cleaning mechanisms
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D43/00—Mowers combined with apparatus performing additional operations while mowing
- A01D43/10—Mowers combined with apparatus performing additional operations while mowing with means for crushing or bruising the mown crop
Description
- Harvesters are used to gather a crop. Many harvesters utilize a cleaning shoe to separate grain or other wanted portions of a crop from chaff or other unwanted portions of the crop, referred to as material other than grain (MOG). The cleaning shoe may include several separation frames that facilitate the separation of grain from MOG. The separation frames may include an imperforate floor that forms a pan or filtering elements, such as louvers, that form chaffers or sieves. The separation frames along with their support separation elements may be reciprocated to assist in such separation of grain from MOG.
- When harvesting a crop, a harvester may traverse an uneven terrain or field. For example, harvester may be going uphill or downhill as it traverses a field. In some circumstances, the harvester may be going along a side of a hill. The nonlevel orientation of the harvester, whether going up or down a hill or alongside a hill, may result in uneven distribution of crop flow through the harvester and uneven loading of crop onto the separation frames, such as onto the pans, chaffers or sieves.
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WO 2014/139988 A1 describes a combine harvester with a preparation pan, an upper sieve and a lower sieve. The preparation pan is supported on four swingers, whereby the front swingers are driving the pan and the rear swingers just follow the drive motion. The length of a connection between the driven point of the driving swingers and their drive can be altered. - Disclosed herein are harvesters that have separation frames that have an adjustable orientation to accommodate a nonlevel orientation of the harvester, such as when the harvester is going up or down a hill or alongside a hill. The harvesters adjust the orientation of one separation frame relative to the orientation of another separation frame. The harvesters adjust the orientation of a separation frame without altering a reciprocation stroke distance of the separation frame. In other words, although the orientation at which a separation frame extends may be adjusted, the distance by which the separation frame is reciprocated remains the same.
- Disclosed is a harvester that comprises a chassis, a first separation frame movably supported by the chassis and upon which crop material is deposited, a second separation frame movably supported by the chassis and upon which the crop material is deposited; a reciprocating drive operably coupled to the separation frame to reciprocate the separation frame and an adjustable link operably coupled between the separation frame and the chassis. The adjustable link facilitates adjustment of an orientation of the first separation frame independent of an orientation of the second separation frame without altering a reciprocation stroke distance.
- Throughout this disclosure, separation frames are described as having an adjustable orientation. The "adjustable orientation" refers to the orientation of the plane containing or along which the major dimensions of the separation frame extend, such as the length and width of the separation frame, wherein the thickness of the separation frame may be considered a minor dimension. In some implementations, the separation frame may carry louvers which themselves are rotatable between various positions. In such implementations, the louvers may be rotatable or may have adjustable orientations relative to the separation frame supporting the louvers, wherein the separation frame incorporating the louvers also has an adjustable orientation. In some circumstances, the orientation of the separation frame may be adjusted while the orientation of the louvers relative to the frame remain the same. In some circumstances, the orientation of separation frame and the orientation of the louvers relative to the frame may be concurrently adjusted.
- In some implementations, the example harvesters adjust the orientation of at least one separation frame in response to commands provided by an operator of the harvester. In yet other implementations, the example harvesters may include sensors that sense the orientation of the harvester, wherein the orientation of at least one separation frame is automatically adjusted based upon the sensed orientation of the harvester. In yet other implementations, the example harvester may include sensors that sense the flow of crops on to a separation frame or from one separation frame to another separation frame, wherein upon sensing and uneven crop flow or uneven loading of crop onto a separation frame, the harvester automatically adjusts the orientation of at least one separation frame. In some implementations, the automatic adjustment of the orientation of at least one separation frame may be based upon a combination of signals indicating the orientation of the harvester (including distinct portions of the harvester) and signals indicating an uneven or nonuniform crop flow through the harvester. In some implementations, the adjustment may not be automatic, but may be in response to commands provided by an operator who receives information from sensors indicating the orientation of the harvester and/or uneven crop flow through the harvester.
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Figure 1 is a schematic diagram of an example harvester having an example separation frame with an adjustable orientation. -
Figure 2 is a flow diagram of an example method for separating grain from MOG using a separation frame with an adjustable orientation. -
Figure 3 is a side view of portions of an example harvester. -
Figure 4 is a left side rear perspective view of portions of an example cleaning system of the example harvester ofFigure 3 . -
Figure 5 is a right side rear perspective view of portions of the cleaning system ofFigure 4 . -
Figure 6 is a side view of portions of the example cleaning system ofFigure 4 illustrating an example step pan of the cleaning system in a middle stroke position while being reciprocated -
Figure 7 is a side view of portions of the example cleaning system ofFigure 4 illustrating the example step pan of the cleaning system in a top stroke position while being reciprocated. -
Figure 8 is a side view of portions of the example cleaning system ofFigure 4 illustrating the example step pan of the cleaning system in a bottom stroke position while being reciprocated. -
Figure 9 is a side view of portions of the example cleaning system ofFigure 4 illustrating the example step pan in a forwardly tilted orientation. -
Figure 10 is a side view of portions of the example cleaning system ofFigure 4 illustrating the example step pan in a rearwardly tilted orientation. -
Figure 11 is a top perspective view of portions of another example cleaning system of the harvester ofFigure 3 . -
Figure 12 is a front view of the portions of the example cleaning system ofFigure 11 illustrating the example step pan in a rightward leaning orientation. -
Figure 13 is a perspective view of one side of portions of another example cleaning system of the harvester ofFigure 3 . -
Figure 14 is a side view of portions of another example cleaning system of the harvester ofFigure 3 . -
Figure 15 is a perspective view of portions of another example cleaning system of the harvester ofFigure 3 . - Throughout the drawings, identical reference numbers designate similar, but not necessarily identical, elements. The figures are not necessarily to scale, and the size of some parts may be exaggerated to more clearly illustrate the example shown. Moreover, the drawings provide examples and/or implementations consistent with the description; however, the description is not limited to the examples and/or implementations provided in the drawings.
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Figure 1 is a schematic diagram of anexample harvester 20. Harvester 20 has a separation frame that has an adjustable orientation to accommodate a nonlevel orientation of the harvester, such as when the harvester is going up or down a hill or alongside a hill.Harvester 20 may further adjust the orientation of its separation frame relative to the orientation of another separation frame.Harvester 20 may adjust the orientation of a separation frame without altering a reciprocation stroke distance of the separation frame. In other words, although the orientation at which a separation frame extends may be adjusted, the distance by which the separation frame is reciprocated remains the same. Harvester 20 compriseschassis 24,separation frame 26,separation frame 30, reciprocatingdrive 40 andadjustable link 44. -
Chassis 24 comprises the base frame ofharvester 20.Chassis 24 may comprise multiple brackets, plates and the like upon which the various components ofharvester 20 are supported and mounted. Jesse 24 may have a variety of sizes, shapes and configurations depending upon particulars ofharvester 20. -
Separation frame 26 comprises a frame or panel that facilitates the separation of grain from MOG. In one implementation,separation frame 26 comprises or supports an imperforate floor so as to form a pan. In another implementation,separation frame 26 comprises or supports filtering elements through which grain may pass but MOG of a predefined characteristic or size may not pass. In one implementation, the filtering elements may comprise louvers, wherein grain may pass between it the louvers and wherein MOG may not pass through the louvers, the MOG being blown and discharged from the harvester. -
Separation frame 26 is movably supported bychassis 24. In one implementation,separation frame 26 is movably supported such that it may be reciprocated back-and-forth by reciprocatingdrive 40. In one implementation,separation frame 26 may be additionally movable such that it orientation or levelness relative tochassis 24 may be adjusted. -
Separation frame 30 is similar toseparation frame 26.Separation frame 30 comprises a frame that facilitates the separation of grain from MOG. In one implementation,separation frame 30 comprises or supports an imperforate floor so as to form a pan. In another implementation,separation frame 30 comprises or supports filtering elements through which grain may pass but MOG of a predefined characteristic or size may not pass. In one implementation, the filtering elements may comprise louvers, which may or may not be adjustable relative to the separation frame, wherein grain may pass between the louvers and wherein MOG may not pass through the louvers, the MOG being blown and discharged from the harvester. -
Separation frame 30 is movably supported bychassis 24.Separation frame 30 is movably supported such that it may be reciprocated back-and-forth by reciprocatingdrive 40.Separation frame 26 is additionally movable such that it orientation or levelness relative tochassis 24 may be adjusted. - Reciprocating drive (RD) 40 comprises a drive mechanism operably coupled to
separation frame 30 so as to reciprocateseparation frame 30. Reciprocatingdrive 40 comprises a source of power, such as an internal combustion engine ofharvester 20 or a source of electrical power comes such as a battery. Reciprocatingdrive 40 may comprise a hydraulic or pneumatic system driven by the source of power, wherein power is delivered hydraulically to drive inreciprocate separation frame 30. Reciprocatingdrive 40 may comprise a driveshaft which is rotationally driven by the source of power, wherein motion of the driveshaft is converted by cams, linkages, swing arms and the like for reciprocatingseparation frame 30. In the example illustrated, reciprocatingdrive 40 is additionally operably coupled toseparation frame 26 so as to also reciprocateseparation frame 26. In other implementations,separation frame 26 may have its owndedicated reciprocating drive 40 or may utilize a reciprocating drive that shares components with reciprocatingdrive 40. -
Adjustable link 44 comprises at least one link operably coupled betweenchassis 24 andseparation frame 30.Adjustable link 44 is connected to a pivot point ofseparation frame 30.Adjustable link 44 has an adjustable length so as to adjust the location of the pivot point so as to alter the orientation or levelness ofseparation frame 30 relative tochassis 24 and relative toseparation frame 26.Adjustable link 44 is located such that changes to the length ofadjustable link 44 allow the orientation ofseparation frame 30 to be adjusted independent of the orientation ofseparation frame 26 and without altering the reciprocation stroke distance, the distance by whichseparation frame 30 is reciprocated back-and-forth during a cycle or single revolution. - In one implementation,
adjustable link 44 has an adjustable length such that the fore-aft orientation ofseparation frame 30 is adjustable. For example, whenharvester 20 is going uphill,adjustable link 44 may be adjusted such that the orientation ofseparation frame 30 is not level, but is tilted downwardly in a forward direction. Whenharvester 20 going downhill, adjustable link may be adjusted such that the orientation ofseparation frame 30 is not level, but is tilted upwardly in a forward direction. In one implementation, adjustable link has an adjustable length such that the transverse orientation ofseparation frame 30 is adjustable. For example, whenharvester 20 is traversing along the side of a hill sloping downward to the left, adjustable link may be adjusted such that the orientation ofseparation frame 30 is not level, but is tilted downwardly to the right. Conversely, whenharvester 20 is traversing along the side of a hill sloping downward to the right, adjustable link may be adjusted such that the orientation ofseparation frame 30 is not level, but is tilted downwardly to the left. In some implementations,adjustable link 44 may comprise multiple such links at various locations such that the length of the adjustable lengths of the various links may be adjusted relative to one another to adjust the orientation ofseparation frame 30 in both the fore-aft direction and the transverse direction. -
Figure 2 is a flow diagram of anexample method 100 for separating grain from MOG.Method 100 adjusts the orientation of a separation frame to accommodate times when a harvester may be traversing an uneven terrain.Method 100 facilitates more even loading of crop in the harvester. Althoughmethod 100 is described in the context of being carried out withharvester 20, it should be appreciated thatmethod 100 may likewise be carried out with any of the example harvester described hereafter or with other similar harvesters having adjustable links. - As indicated by
block 104, a first separation frame, for toseparation frame 30, is reciprocated while at a first orientation through a reciprocating distance with a reciprocating drive, that is reciprocatingdrive 40. As indicated byblock 108, a second separation frame, such asseparation frame 26, is reciprocated while at a second orientation. In one implementation, the separation frame to reciprocated by a shared reciprocating drive. In other implementations, the two separation frames are reciprocated by distinct reciprocating drives. - As indicated by
block 112, the length of a link, such asadjustable link 44, is adjusted to reposition the first separation frame (separation frame 30) at a third orientation while the second separation frame (separation frame 26) remains at its second orientation. For example, as shown by 1, the length ofadjustable link 44 may be changed from the first length shown in solid lines to the second length shown in broken lines, adjusting the orientation ofseparation frame 30 from the first orientation shown in solid lines to the second orientation shown in broken lines. In one implementation, the adjustment of the link is carried out with a powered actuator in response to electrical signals. For example, in one implementation, a powered actuator, such as a pneumatic or hydraulic cylinder-piston assembly, may be utilized to adjust a length of the link. In some implementations, the powered actuator may itself form the adjustable link. - In some implementations, the adjustment of the length of the link is carried out automatically in response to value sensed by at least one sensor. For example, in one implementation, the adjustment of the length of the link is carried out automatically in response to signals from at least one sensor indicating an orientation or levelness of the harvester or the terrain over which the harvester traverses. In one implementation, the adjustment of the length of the link is carried out automatically in response to or based upon signals from at least one sensor indicating crop flow (grain and/or MOF) being deposited upon the first separation frame, passing through the first separation frame or being deposited upon the second separation frame.
- As indicated by
block 116, the first separation frame is reciprocated while at the third orientation through the reciprocating distance with the reciprocating drive. The reciprocating distance is the same as the reciprocating distance through which the first separation frame with reciprocated while at the first orientation. In one implementation, such reciprocation may be linear as indicated byarrows 118. In another implementation, such reciprocation may be along an oval or curved path as indicated byarrows 119. -
Figure 3 illustrates anexample harvester 200, an example implementation ofharvester 20 described above.Harvester 200 comprises a main frame orchassis 212 having wheel structure including front and rearground engaging wheels front wheels 214 are driven by an electronically controlled hydrostatic transmission. - A vertically adjustable header or
harvesting platform 216 is used for harvesting a crop and directing it to afeeder house 218. In one implementation,harvesting platform 216 may comprise row units for guiding and directing crops planted in rows, such as corn. In one implementation,harvesting platform 216 may comprise reels that gather the crops being harvested. In some implementations,harvesting platform 216 may comprise at least one draper belt that further assist in moving the crop being gathered. - The
feeder house 218 is pivotally connected to thechassis 212 and includes a conveyor for conveying the harvested crop to abeater 219. Thebeater 219 directs the crop upwardly through aninlet transition section 222 to a rotary threshing and separatingassembly 224. In other implementations, other orientations and types of threshing structures may be utilized. For example,assembly 224 may comprise a transverse rotor and concave in combination with straw walkers. - The rotary threshing and separating
assembly 224 threshes and separates the harvested crop material. The harvested crop material is interacted upon by arotor 237 rotates opposite to a concave 225. Grain and chaff fall through separation grates of concave 225 to acleaning system 226, portions of which are shown. The grain and chaff are transported along various reciprocating separation frames including astep pan 227, achaffer 228 and asieve 229. As will be described in more detail hereafter with respect toFigures 4 et seq.,step pan 227 is similar toseparation frame 30 described above in thatstep pan 227 is operably coupled to an adjustable link that facilitates adjustment of an orientation ofstep pan 227 relative to the orientation ofchassis 212,chaffer 228 andsieve 229, independent of the orientation ofchassis 212,chaffer 228 andsieve 229, without altering a reciprocation stroke distance ofstep pan 227. - An
air fan 230 directs air across and through the various reciprocating separation frames such that less dense or lighter chaff blown to a rear ofharvester 24 being discharged. Thecleaning system 226 removes the chaff and directs the clean grain toelevator 233.Clean grain elevator 233 conveys the grain tograin tank 242. The clean grain in thetank 242 can be unloaded into a grain cart or truck by unloadingauger 230. Tailings fall into the return elevator orauger 231 and are conveyed to therotor 237 where they are threshed a second time. - Threshed and separated straw is discharged from the rotary threshing and separating
assembly 224 through anoutlet 232 by adischarge beater 234. Thedischarge beater 234, in turn, propels the straw out the rear of the combine. It should be noted that thedischarge beater 234 could also discharge crop material other than grain directly to a straw chopper. The operation of the combine is controlled from an operator'scab 235. - An operator's
console 250 located in thecab 235 includes conventional operator controls including a hydro shift lever 252 for manually controlling the speed range and output speed of the hydrostatic transmission. An operator interface device 254 in thecab 235 allows entry of information into a controller 255 comprising an on-board processor system, which provides automatic speed control and numerous other control functions described below for theharvester 200. The operator can enter various types of information into the operator interface device 254, including crop type, location, yield and the like. In the example illustrated,combine harvester 200 additionally comprisesdisplay 257 for presenting information to the operator. In some implementations,display 257 may additionally serve as an input device, such as whendisplay 257 comprises a touch screen. In other implementations,display 257 may be combined with interface device 254. - As further shown by
Figure 3 ,harvester 200 additionally comprisesroll sensor 260,pitch sensor 262,crop flow sensors 264, 266 andcontroller 270.Roll sensor 260 senses and detects the roll ofharvester 200 as it is traversing a growing medium or field.Pitch sensor 262 senses and detects a current pitch ofharvester 200 as it is traversing a growing medium or field. The detected roll and pitch ofharvester 200 is tocontroller 270 for the automated adjustment of the orientation ofpan 227 ofcleaning system 226. In some implementations, signals fromsensors controller 270 to adjust the orientation of other separation pans, such aschaffer 228 and/orsieve 229. -
Crop flow sensors 264, 266 sense a uniformity or levelness of the flow of crop. In one implementation, crop flow sensors 264 come to 66 may comprise photodetectors or cameras. In one implementation, crop flow sensor to 64, 266 may comprise sensors that form an electromagnetic plane through which the crop material flows. Examples of such sensors are found in co-pending US Patent Application Serial No. __________ (Atty. Dkt. No. P26555-US-PRI) filed on the same day here with by Dybro et al and entitled HARVESTER WITH ELECTROMAGNETIC PLANE CROP MATERIAL FLOW SENSOR. - Crop sensor 264 is located between concave 225 and pan 227, wherein sensor 264 output signals indicating the uniformity or lack thereof with respect to the flow of crop material from concave 225 onto
pan 227. In one implementation, sensor 264 may output signals indicating an extent to which the flow of grain and chaff from concave 225 is heavier or greater in a front portion or a rear portion ofpan 227, such as whenharvester 200 may be going uphill or downhill. In one implementation, sensor 264 may output signals indicating an extent to which the flow of grain and chaff from concave 225 is heavier greater to one transverse side ofpan 227, the leftward portions or rightward portions ofpan 227, such as whenharvester 200 may be going along the side of a hill. In some implementations, sensor 264 may output singles indicating nonuniform crop flow in both fore-aft and transverse directions. -
Crop flow sensor 266 is similar to crop flow sensor 264 to thecrop flow sensor 266 is located betweenpan 266 andchaffer 228.Crop flow sensor 266 outputs signals indicating an extent to which the flow of grain and chaff frompan 226 is heavier or greater in a front portion or a rear portion ofchaffer 228, such as whenharvester 200 may be going uphill or downhill. In one implementation, sensor 264 may output signals indicating an extent to which the flow of grain and chaff frompan 226 is heavier greater to one transverse side ofchaffer 228, the leftward portions or rightward portions ofchaffer 228, such as whenharvester 200 may be going along the side of a hill. In some implementations,sensor 266 may output singles indicating nonuniform crop flow in both fore-aft and transverse directions. -
Controller 270 comprises software, code, circuitry and/or program logic providing instructions for a processor to adjust operational settings or parameters ofharvester 200 based upon various signals or inputs from sensors ofharvester 200 and based upon commands from an operator ofharvester 200. In the example illustrated,controller 270 outputs control signals that cause the orientation ofpan 266 to be adjusted independent of the orientation ofchaffer 228 and/or sieve 229 and without altering a reciprocation stroke distance ofpan 227. In one implementation,controller 270 outputs such control signals based upon orientation adjustment commands received from an operator, such as from an operator withincab 235 using interface 254. In one implementation,controller 270 output such control signals automatically in response to signals fromsensors controller 270 may output control signals controlling the orientation ofpan 227 based upon additional factors such as based upon signals indicating the amount or volume of crop flow, the current or momentary determined grain yield, sensed moisture of the crop, parameters of rotary threshing and separating assembly 224 (such as the concave spacings), the translational speed at whichharvester 200 is traversing a field and the like. -
Figures 4 and5 illustratecleaning system 226 ofharvester 20 in greater detail. As shown byFigures 4 and5 ,step pan 227 comprise a separation frame having animperforate floor 302 upon which crop material, grain and chaff, is deposited after falling from concave 225 (shown inFigure 3 ).Step pan 227 transitions downward to chaffer 228 across anupper chaffer 304.Upper chaffer 304 extend rearwardly frompan 227 and includes perforations or openings through which air from below are 230 may pass, blowing the lighter chaff rearward. -
Chaffer 228 comprise a separation frame that receives crop material that has passed acrossstep pan 227 andupper chaffer 304.Chaffer 228 may additionally receive crop material that is passed through anoverhead chaffer 306 which also receives crop material from rearward portion of concave 225.Chaffer 228 is movably supported by chassis 212 (shown inFigure 3 ) so as to be reciprocated.Chassis 228 has a floor formed frommultiple louvers 308 which are spaced so as to filter grain from chaff of a first predetermined size. In one implementation, the louvers each have an orientation that is adjustable relative to the main frame ofchaffer 228. -
Sieve 229 comprises a separation frame belowchaffer 228 that receives crop material that is passed throughchaffer 228.Sieve 229 has filtering elements, in the form of louvers, which are spaced so as to filter grain from chaff of a second predetermined size smaller than the first predetermined size. In one implementation, the louvers ofsieve 229 each have an orientation that is adjustable relative to the main frame ofsieve 229. - As further shown by
Figures 4 and5 ,step pan 227,chaffer 228 and sieve 229 are each movably supported bychassis 212 to facilitate reciprocation by reciprocatingdrive 340.Step pan 227 is hung with respect tochassis 212 by a pair of step pan driveswingers 342 and by a pair of step pan drivenswingers 344. Driveswingers 342 each have afirst portion 346 pivotally coupled tochassis 212, asecond portion 348 pivotably connected to step pan 22 7 1/3portion 350 connected to reciprocatingdrive 340. Drivenswingers 344 each have afirst portion 352 pivotally connected to steppan 227 and asecond portion 354 pivotally connected to anadjustable link 356 that is connected tochassis 212. In the example illustrated, link 356 is pivotably connected tochassis 212 and is pivotably connected toportion 354 of drivenswinger 346 about a joint which is guided by apivot guide 360. In the example illustrated, pivot guides 360 comprise plates or other structures secured to or provided bychassis 212, wherein the structures have arcuate slots along whichportions 346 and the end ofswinger 344 are guided asadjustable link 356 is extended and retracted. -
Adjustable link 356 is adjustable between a multitude of different lengths so as to reposition thepivot axis 361 and by chaffer drivenswinger 364. From whichpan 227 is hung and about whichpan 227 pivots during reciprocation along an arcuate path. In the example illustrated, eachadjustable link 356 comprises a hydraulic cylinder-piston assembly which is selectively extendable and retractable in response to control signals from controller 270 (shown and described above with respect toFigure 3 ). Extension and retraction of theadjustable link 356 alters the fore-aft orientation ofpan 227 relative tochassis 228 and sieve 29. Extension and retraction of theadjustable link 356 just the orientation ofstep pan 227 without altering a reciprocation stroke ofpan 227, the distance that pan 227 travels during reciprocation. -
Chaffer 228 is pivotably hung fromchassis 212 bychaffer drive swingers 362 and by chaffer drivenswingers 364. Eachchaffer drive swinger 362 has afirst portion 366 pivotably coupled tochassis 212 at and a second portion 368 (shown inFigure 6 ) pivotably connected tochaffer 228. Each chaffer drivenswinger 362 has a first portion 370 pivotably connected tochassis 212 and asecond portion 372 pivotally connected tochassis 228. -
Sieve 229 is pivotably hung fromchassis 212 bysieve drive swingers 382 and by sieve drivenswingers 384. Eachsieve drive swinger 382 has acentral portion 386 pivotably coupled tochassis 212, aportion 388 pivotably coupled to sieve 29 and anend portion 390 pivotally connected to alinkage 392 that is connected toportion 350 of step pan drive swinger. Each sieve drivenswinger 384 has afirst portion 394 pivotally connected to frame 212 and asecond portion 396 pivotally connected to sieve 229. - Reciprocating
drive 340 drives and reciprocates each of the separation frames, and 227,chaffer 228 andsieve 229. Reciprocatingdrive 340 comprisesdriveshaft 410, drivecams chaffer Pitman arm 418 and sievePitman arm 420.Driveshaft 410 comprises a shaft to connect to a source of torque, such as a hydraulic motor, electric motor or the like.Driveshaft 410 is fixed to drivecams system 20. - Drive
cams Pitman arms driveshaft 410 reciprocatesPitman arms chaffer Pitman arm 418 extends into pivotal connection with its correspondingchaffer drive swinger 362. Eachsieve Pitman arm 420 extends into pivotal connection with its correspondingsieve drive swinger 382. -
Figures 6-8 illustrate portions of a cycle of reciprocatingdrive 340 during the reciprocation ofstep pan 227,chaffer 228 andsieve 229.Figure 6 illustrates reciprocatingdrive 340 whenstep pan 227 is level and is at a middle stroke position.Figure 7 Illustrates reciprocatingdrive 340 whenstep pan 227 is level and is as at a top stroke position.Figure 8 Illustrates reciprocatingdrive 340 whenstep pan 227 is level and is at a bottom stroke position. -
Figures 9 and10 illustrate adjustment of the orientation ofstep pan 227 through the adjustment of the length ofadjustable links 356. As shown by the broken lines ofFigure 9 and10 ,chassis 212,pan 227, steppan drive swinger 342 and step pan drivenswinger 344 form a four bar linkage that maintains the orientation ofpan 227 aspan 227 is being reciprocated by reciprocatingdrive 340. The orientation ofpan 227 may be established by the location of thepivot axis 362.Figure 9 illustrates link 356 in a shortened state. As a result,axis 362 about which the front end ofpan 227 hangs and pivots during reciprocation is in a lowered state.Pan 227 has an orientation tilted forwardly relative tochaffer 228. The reciprocation distance of pan 227 (shown inFigures 6-8 ) does not change. In one implementation, in response to receiving signals fromsensor 260 indicating thatharvester 200 is going uphill and/or receiving signals fromsensors 264, 266 indicating an uneven crop loading of the front and rear portions ofpan 227, controller 270 (shown inFigure 3 ) may output control signals that causeadjustable links 356 to actuate to the shortened state. -
Figure 10 illustrateslink 356 in an extended state. As a result,axis 362 about which the front end ofpan 227 hangs and pivots during reciprocation is in a lowered state.Pan 227 has an orientation tilted forwardly relative tochaffer 228. The reciprocation distance of pan 227 (shown inFigures 6-8 ) does not change. In one implementation, in response to receiving signals fromsensor 260 indicating thatharvester 200 is going downhill and/or receiving signals fromsensors 264, 266 indicating an uneven crop loading of the front and rear portions ofpan 227, controller 270 (shown inFigure 3 ) may output control signals that causeadjustable links 356 to actuate to the extended state. As should be appreciated,controller 270 may output control signals causing adjustable link 3562 have any of a continuum of different links between the shortened state shown in 9 in the extended state shown inFigure 10 depending upon her based upon the extent to which theharvester 20 has a non-level orientation or the extent to which crop is being un-evenly loaded uponpan 227. -
Figure 11 is a top perspective view of portions of anotherexample cleaning system 426 ofharvester 20.Cleaning system 426 is similar tocleaning system 226 described above in all respects except thatcleaning system 426 additionally comprisesadjustable links 456. Those remaining components ofcleaning system 426 which correspond to components ofcleaning system 226 shown inFigure 11 are numbered similarly or are shown inFigures 4-10 . -
Adjustable links 456 cooperate withadjustable links 256 to additionally facilitate adjustment of a transverse orientation ofpan 227. Each adjustment link 456 has afirst end portion 458 pivotably connected to a bracket ofchassis 212 and asecond end portion 459 pivotably connected to andportion 346 of steppan drive swinger 342.End portion 346 of steppan drive singer 342 is not directly pivotably connected tochassis 212, but is pivotably coupled tochassis 212 byadjustable link 456. The connection between andportion 346 andportion 460 ofadjustable link 456 forms apivot axis 461 about which swinger 342 pivots relative tochassis 212. In the example illustrated, extension and retraction oflinks 456 is guided by pivot guides 460 which, like pivot guides 360, comprise plates or other structures secured to or provided bychassis 212, wherein the structures have arcuate slots along whichportions adjustable link 456 is extended and retracted. - In the example illustrated,
adjustable links 456 are similar toadjustable links 256 in thatadjustable links 456 comprise hydraulic cylinder-piston assemblies that may be extended and retracted in response to electrical control signals from controller 270 (shown inFigure 3 ). In other implementations,adjustable links 456 may comprise pneumatic cylinder-piston assemblies, electric solenoid or other linear actuators having adjustable links. In some implementations, adjustable links to 56 and/oradjustable links 456 may comprise telescopic links or other links having links with your adjusted by separate actuators that are operably coupled to such links. -
Figure 12 is a front view ofcleaning system 426illustrating pan 227 having an orientation whichpan 227 is tilted downward to the right (as seen inFigure 12 ) relative tochassis 212 and relative to chaffer 228 (shown inFigure 5 ) bylinks Figure 3 ). In response to receiving signals fromsensor 262 and/or from one or both ofsensor 264, 266 indicating thatharvester 20 is traversing a side of a hill with the right side of the harvester being higher than the left side of the harvester and/or indicating an uneven crop flow with a greater crop flow onto theleft side 463 ofpan 227 as compared to theright side 465 ofpan 227,controller 270 may output controlsignals causing links pan 227 to move to an extended state or lengthen state relative to the retracted or shorter state oflinks pan 227. As shown byFigure 12 , this results inpan 227 being tilted downwardly to the right relative tochassis 212 to accommodate the electrically downward incline ofchassis 212 and the larger crop amount being deposited upon theleft side 463 ofpan 227. - In some circumstances, the orientation of
pan 227 may be concurrently adjusted in two dimensions, such as whenharvester 20 years tilted in the fore-aft direction going up or down a hill and is also tilted transversely such as when traveling across a side of the hill. In such an implementation, the fourindividual links controller 270. For example,links 256 may be both set at a fully extended position, link 456 on the left side ofpan 227 may be set at an intermediate position and link 456 on the right side ofpan 227 may be set at a fully retracted or shortened position such thatpan 227 tilts rearwardly and to the right. Other combinations of settings, depending upon signals fromsensors controller 270. -
Figure 13 illustrates one side of anotherexample cleaning system 626 that may be provided as part ofharvester 20. The other side ofcleaning system 626 is similar to the side being shown.Cleaning system 626 is similar tocleaning system 426 described above except thatcleaning system 626 omitsadjustable links 256, whereinportions 354 of drivenswingers 344 are pivotably connected directly tochassis 212. Those remaining components ofcleaning system 626 which correspond to components ofcleaning system 426, andcleaning system 226, are numbered similarly. Likewise, those remaining components ofharvester 20 not shown inFigure 13 are illustrated inFigures 3-5 . In the example illustrated, the orientation ofpan 227 is controlled by adjusting the length ofadjustable links 456. -
Figure 14 illustrates one side of anotherexample cleaning system 726 which may be provided as part ofharvester 20. It should be appreciated that the other side ofcleaning system 726 is similar to the side illustrated inFigure 14 .Cleaning system 726 is similar tocleaning system 626 except thatcleaning system 726 omitsadjustable links 456 and additionally comprisesadjustable links 756 in place oflink 392. Those remaining components ofcleaning system 726 which correspond to components ofcleaning system 626, andcleaning system 226, are numbered similarly. Likewise, those remaining components ofharvester 20 not shown inFigure 14 are illustrated inFigures 3-5 . - As shown by
Figure 14 ,end portion 346 of each drivenswinger 342 is pivotably connected directly tochassis 212. Similar to link 392, link 756 has afirst end portion 763 pivotably connected to sievedrive swinger 382 and asecond end portion 765 pivotably connected toportion 350 of steppan drive swinger 342. Unlikelinks 392,links 756 have an adjustable length similar toadjustable links adjustable links 756 comprise hydraulic cylinder-piston assemblies that may be extended and retracted in response to electrical control signals from controller 270 (shown inFigure 3 ). In other implementations,adjustable links 756 may comprise pneumatic cylinder-piston assemblies, electric solenoid or other linear actuators having adjustable links. -
Figure 15 illustrates portions of anotherexample cleaning system 826 as part of anexample harvester 20.Cleaning system 826 is similar tocleaning system 226 described above except thatcleaning system 826 additionally comprisesadjustable links 856 andadjustable links 857. Those remaining components ofcleaning system 826 which correspond to components ofcleaning system 226 are numbered similarly or are shown inFigures 4 and5 . Likewise, those remaining components ofharvester 20 not shown inFigure 13 are illustrated inFigures 3-5 . For ease of illustration,chapter 306 is not shown inFigure 15 . In the example illustrated,cleaning system 826 facilitates adjustment of each of the individual orientations ofstep pan 227,chapter 228 and sieve 229 relative to one another and relative tochassis 227 without altering the reciprocation stroke distance of any of such separation frames. -
Adjustable links 856 extend on opposite sides ofchaffer 228.Adjustable links 856 are each similar toadjustable links 256 and/oradjustable links 456 as described above.Adjustable links 856 facilitate adjustment of the fore-aft orientation or tilting ofchaffer 228. Eachadjustable links 856 has afirst end portion 859 pivotally connected to a bracket ofchassis 212 and asecond end portion 863 pivotally connected tochaffer 228. In the example illustrated,second end portion 863 is pivotably connected directly tochaffer 228. In other implementations,second end portion 863 may be pivotably connected to a driven swinger which is itself pivotably connected tochaffer 228. - The length of
adjustable links 856 may be extended or retracted in response to control signals fromcontroller 270 so as to adjust the forward or rearward incline or tilt ofchaffer 228. For example, when going up a hill,adjustable links 856 may be adjusted to a shortened length, tiltingchaffer 228 downwardly towards the front of theharvester 20 relative to thechassis 212 ofharvester 20. When going downhill,adjustable links 856 may be adjusted to an extended length, tiltingchaffer 228 downwardly towards the rear of theharvester 20, relative to thechassis 212 ofharvester 20. -
Adjustable links 857 extend on opposite sides ofsieve 229.Adjustable links 857 are each similar toadjustable links 256 and/oradjustable links 456 as described above.Adjustable links 857 facilitate adjustment of the fore-aft orientation or tilting ofsieve 229. Each ofadjustable links 857 has afirst end portion 865 pivotally connected to a bracket ofchassis 212 and asecond end portion 867 pivotally connected to drivensieve swinger 384 which is no longer pivotably connected directly tochassis 212. The pivot axis provided at the connection ofend portion 867 and drivensieve swinger 384 is guided bypivot guide 867, which is similar to pivotguide 360 described above - The length of
adjustable links 856 may be extended or retracted in response to control signals fromcontroller 270 so as to adjust the forward or rearward incline or tilt ofchaffer 228. For example, when going up a hill,adjustable links 856 may be adjusted to a shortened length, tiltingchaffer 228 downwardly towards the front of theharvester 20 relative to thechassis 212 ofharvester 20. When going downhill,adjustable links 856 may be adjusted to an extended length, tiltingchaffer 228 downwardly towards the rear of theharvester 20, relative to thechassis 212 ofharvester 20. - Although the present disclosure has been described with reference to example implementations, workers skilled in the art will recognize that changes may be made in form and detail without departing from the scope of the claims.
Claims (20)
- A harvester (20, 200) comprising:a chassis (24, 212);a first separation frame (30) movably supported by the chassis (24, 212) and upon which crop material is deposited;a second separation frame (26) movably supported by the chassis (24, 212) and upon which the crop material is deposited;a reciprocating drive (40, 340) operably coupled to the separation frames (30, 26) to reciprocate the separation frames (30, 26) by a reciprocation stroke distance back-and-forth during a single revolution; anda link (44, 356); the harvester being characterised in that said link (44, 356) is coupled tothe first separation frame (30) and the chassis (24, 212); and in that the length of the link (44, 356) is adjustable to adjust an orientation of the first separation frame (30) independent of an orientation of the second separation frame (26) and without altering the reciprocation stroke distance.
- The harvester (20, 200) of claim 1, wherein the first separation frame (30) and the second separation frame (26) are part of a cleaning system (226) of the harvester (20, 200).
- The harvester (20, 200) of claim 1, wherein the first separation frame (30) supports a step pan (227) and wherein the second separation frame (26) supports louvers (308).
- The harvester (20, 200) of claim 1, wherein the adjustable link (44, 356) comprises a powered linear actuator.
- The harvester (20, 200) of claim 4, wherein the powered linear actuator comprises a cylinder-piston assembly.
- The harvester (20, 200) of claim 1, wherein the reciprocating drive (40, 340) comprises:a driven swinger (344) having a first portion (352) pivotably connected to a first portion of the first separation frame (30);a drive swinger (342) having a first portion (346) pivotally coupled to the chassis (24, 212); a second portion (348) pivotably connected to a second portion of the first separation frame (30); and a third portion (390) pivotally coupled to a source of reciprocating motion,wherein the adjustable link (44, 356) has a first end pivotably connected to the chassis (24, 212) and a second end pivotably connected to a second portion of the driven swinger (344);
- The harvester (20, 200) of claim 6, wherein the reciprocating drive (40, 340) further comprises the source of reciprocating motion, wherein the source of reciprocating motion comprises a driveshaft (410), a drive cam (414) operably coupled to the driveshaft (410) to be driven by the driveshaft (410); and a Pitman arm (420) operably coupled between the drive cam (414) and the drive swinger (342).
- The harvester (20, 200) of claim 7, wherein the first separation frame (30) supports louvers.
- The harvester (20, 200) of claim 7, wherein the first separation frame (30) supports a step pan (227) and the second separation frame (26) supports louvers (308), the reciprocating drive further comprising:a second drive swinger (362) having a first portion (366) pivotably coupled to the second separation frame (26) and a second portion (368) pivotably connected to the chassis (24, 212);a linkage having a first portion pivotally connected to the third portion of the drive swinger (342) and a second portion pivotally connected to the third portion of the second drive swinger (362).
- The harvester (20, 200) of claim 9 further comprising a second driven swinger (342) having a first portion (458) pivotally connected to the second separation frame (30); and a second adjustable link (456) having a first portion pivotably connected to the chassis (24, 212) and a second portion pivotably connected to a second portion of the second driven swinger (342).
- The harvester (20, 200) of claim 10 further comprising:a third separation frame, the third separation frame supporting louvers (308);a third driven swinger (344) having a first portion pivotably connected to a first portion of the third separation frame;a third adjustable link (756), the third adjustable link (756) having a first end pivotably connected to the chassis (24, 212) and a second end pivotably connected to a second portion of the third driven swinger (344);a third drive swinger (362) having a first portion pivotally coupled to the chassis (24, 212); a second portion pivotably connected to a second portion of the third separation frame; and a third portion to be pivotally coupled to a second source of reciprocating motion.
- The harvester (20, 200) of claim 11, wherein the second source of reciprocating motion comprises the drive shaft (410); a second drive cam (412) operably coupled to the drive shaft (410) to be driven by the drive shaft (410); and a second Pitman arm (418) operably coupled between the second drive cam (412) and the third drive swinger (362).
- The harvester (20, 200) of claim 7 further comprising:a second separation frame, the second separation frame supporting louvers;a second driven swinger (364) having a first portion pivotably connected to a first portion of the second separation frame;a second adjustable link (456), the second adjustable link (456) having a first end pivotably connected to the chassis (24, 212) and a second end pivotably connected to a second portion of the second driven swinger (364);a second drive swinger (362) having a first portion pivotally coupled to the chassis (24, 212); a second portion pivotably connected to a second portion of the second separation frame; and a third portion to be pivotally coupled to a second source of reciprocating motion.
- The harvester (20, 200) of claim 13, wherein the second source of reciprocating motion comprises a second drive cam (412) operably coupled to the drive shaft (410) to be driven by the drive shaft (410) and a second Pitman arm (418) operably coupled between the second drive cam (412) and the second drive swinger (362).
- The harvester (20, 200) of claim 6 further comprising a pivot guide (360) to guide translation of a pivot connection between the driven swinger (344) and the adjustable link (356).
- The harvester (20, 200) of claim 6, wherein the reciprocating drive comprises:a second driven swinger (364) having a first portion pivotably connected to a third portion of the first separation frame (30);a second drive swinger (362) comprising a first portion pivotally coupled to the chassis (24, 212); a second portion pivotably connected to a second portion of the first separation frame (30) and a third portion pivotally coupled to the source of reciprocating motion;a second adjustable link (456) having a first end pivotally connected to the chassis (24, 212) and a second end pivotally connected to a second portion of the second driven swinger (26);a third adjustable link (756) having a first end pivotally connected to the chassis (24, 212) and a second end pivotally connected to the first portion of the drive swinger (342); anda fourth adjustable link (856) having a first end pivotally connected to the chassis (24, 212) and a second end pivotally connected to the first portion of the second drive swinger (362).
- The harvester (20, 200) of claim 1, wherein the reciprocating drive (40, 340) comprises a drive swinger (342) comprising a first portion pivotally coupled to the chassis (24, 212); a second portion pivotably connected to a portion of the first separation frame (30); wherein the adjustable link (356) has a first end pivotally coupled to a third portion of the drive swinger (342) and a second end pivotally coupled to a source of reciprocating motion.
- The harvester (20, 200) of claim 1, wherein the reciprocating drive comprises:a driven swinger (344) having a first portion pivotably connected to the chassis (24, 212) and a second portion pivotally connected to the first separation frame (30);a drive swinger (342) having a first portion pivotally coupled to the chassis (24, 212); a second portion pivotably connected to a second portion of the first separation frame (30); and a third portion pivotally coupled to a source of reciprocating motion; andwherein the adjustable link (356) has a first end pivotably connected to the chassis (24, 212) and a second end pivotably connected to the first portion of the drive swinger (342).
- The harvester (20, 200) of claim 1 further comprising a sensor (264, 266) to sense uneven grain flow onto the first separation frame (30) and a controller (270) to automatically output control signals, based upon signals from the sensor (264, 266) to a length of the adjustable link (356) and an orientation of the first separation frame (30).
- The harvester (20, 200) of claim 1 further comprising a sensor (260, 262) to sense an orientation of at least portions of the harvester (20, 200) and a controller (270) to automatically output control signals, based upon signals from the sensor (260, 262) to a length of the adjustable link (356) and an orientation of the first separation frame (30).
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US15/844,522 US10568267B2 (en) | 2017-12-16 | 2017-12-16 | Harvester separation frame orientation adjustment |
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EP3498078A1 EP3498078A1 (en) | 2019-06-19 |
EP3498078B1 true EP3498078B1 (en) | 2020-12-02 |
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EP18211634.3A Active EP3498078B1 (en) | 2017-12-16 | 2018-12-11 | Harvester separation frame orientation adjustment |
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US10568267B2 (en) | 2017-12-16 | 2020-02-25 | Deere & Company | Harvester separation frame orientation adjustment |
US10827683B2 (en) | 2018-05-02 | 2020-11-10 | Cnh Industrial America Llc | Sieve assembly for a crop processing system of an agricultural harvester |
US10757863B2 (en) * | 2018-06-22 | 2020-09-01 | Cnh Industrial America Llc | Device and method for changing cleaning shoe shaker arm angle |
DE102019125489A1 (en) * | 2019-09-23 | 2021-03-25 | Claas Selbstfahrende Erntemaschinen Gmbh | Pivoting device for the even distribution of goods on a conveying and cleaning element |
DE102022116228A1 (en) | 2022-06-29 | 2024-01-04 | Deere & Company | Sensor arrangement for detecting properties of a mixture containing grain and impurities in a cleaning device of a combine harvester |
US11877538B1 (en) | 2022-08-30 | 2024-01-23 | Calmer Holding Company, Llc | Threshing grains and legumes utilizing concaves with adjustable openings |
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GB2450483A (en) * | 2007-06-25 | 2008-12-31 | Cnh Belgium Nv | A Grain cleaning system for a combine harvester |
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US20190380274A1 (en) | 2019-12-19 |
EP3498078A1 (en) | 2019-06-19 |
US11013180B2 (en) | 2021-05-25 |
BR102018075938A2 (en) | 2019-07-02 |
US10568267B2 (en) | 2020-02-25 |
US20190183053A1 (en) | 2019-06-20 |
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